11003645953 has 4 divisors (see below), whose sum is σ = 11117085700. Its totient is φ = 10890206208.

The previous prime is 11003645923. The next prime is 11003645963. The reversal of 11003645953 is 35954630011.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7415276544 + 3588369409 = 86112^2 + 59903^2 .

It is a cyclic number.

It is not a de Polignac number, because 11003645953 - 2¹³ = 11003637761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11003645923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56719728 + ... + 56719921.

It is an arithmetic number, because the mean of its divisors is an integer number (2779271425).

Almost surely, 2^11003645953 is an apocalyptic number.

It is an amenable number.

11003645953 is a deficient number, since it is larger than the sum of its proper divisors (113439747).

11003645953 is an equidigital number, since it uses as much as digits as its factorization.

11003645953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113439746.

The product of its (nonzero) digits is 48600, while the sum is 37.

The spelling of 11003645953 in words is "eleven billion, three million, six hundred forty-five thousand, nine hundred fifty-three".